Open-source middleware software
2362 open-source libraries, tools and applications tagged middleware, ranked by how closely middleware is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
2362 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| Pact Contract Testing Framework Pact is a code-first contract testing framework that lets consumers define expected interactions with providers via a DSL and mock service,… | 32 | 316 | active |
| NVIDIA-NeMo/Switchyard Switchyard is a Rust proxy and library that routes LLM traffic across models and providers while translating between OpenAI Chat, Anthropic… | 77 | 3421 | experimental |
| motiful/cc-gateway CC Gateway is a self-hosted reverse proxy that sits between Claude Code clients and the Anthropic API, normalizing device fingerprints, tel… | 45 | 3044 | experimental |
| honojs/honox HonoX is a meta-framework built on Hono and Vite for creating full-stack websites and Web APIs with file-based routing and fast SSR. It sup… | 93 | 2941 | experimental |
| Multigres Multigres is an adaptation of Vitess for PostgreSQL, providing a two-level proxy layer (Multigateway and Multipooler) for connection poolin… | 68 | 2683 | experimental |
| LukeMathWalker/pavex Pavex is a Rust framework for building APIs and web applications, aiming to combine the productivity of frameworks like Rails or ASP.NET Co… | 81 | 2070 | experimental |
| ghuntley/loom Loom is an AI-powered coding agent written in Rust that provides a REPL interface for interacting with LLM-driven agents capable of file sy… | 61 | 1567 | experimental |
| nkzw-tech/fate fate is a modern, type-safe data client for React (with a Vue client also available) inspired by Relay and GraphQL. It combines co-located … | 85 | 1124 | experimental |
| anthdm/superkit SUPERKIT is a full-stack web framework for Go that bundles project scaffolding, Templ-based views, Tailwind CSS, database migrations, valid… | 15 | 1101 | experimental |
| levkk/rwf Rwf is a comprehensive MVC web framework for building web applications in Rust, bundling an HTTP server, ORM, dynamic templates, authentica… | 57 | 1062 | experimental |
| DragoQCC/CrucibleC2 HardHat C2 (CrucibleC2) is a cross-platform, multi-user Command & Control framework written in C#/.NET for red team engagements and penetra… | 23 | 1022 | experimental |
| justrach/turboAPI TurboAPI is a FastAPI-compatible Python web framework with a Zig-native HTTP core, offering drop-in migration by changing a single import l… | 85 | 1009 | experimental |
| angular/angular.js AngularJS is a JavaScript MVW framework that extends HTML with directives and provides two-way data binding, dependency injection, and clie… | 10 | 58486 | abandoned |
| ipkn/crow Crow is a fast, header-only C++ micro web framework inspired by Python Flask, offering Flask-like routing, built-in JSON handling, Mustache… | 23 | 7626 | abandoned |
| NancyFx/Nancy Nancy is a lightweight, low-ceremony web framework for building HTTP-based services on .NET Framework/Core and Mono. It provides a simple D… | 10 | 7091 | abandoned |
| Zend Framework Zend Framework is a collection of 60+ loosely coupled, object-oriented PHP packages for building web applications and services, installable… | 10 | 5429 | abandoned |
| deployd Deployd is a Node.js toolkit for building realtime REST APIs for web and mobile apps using configurable Resources like Collections, managed… | 23 | 4935 | abandoned |
| spring-attic/spring-security-oauth A Spring Security library providing OAuth 1(a) and OAuth 2 support for both consumers and providers in Spring web applications. It was arch… | 10 | 4688 | abandoned |
| Rendr Rendr is a small JavaScript library that lets you run Backbone.js apps on both the client and the server, rendering fully-formed HTML on th… | 23 | 4050 | abandoned |
| byt3bl33d3r/MITMf MITMf is a Python framework for performing Man-In-The-Middle and network attacks, featuring built-in SMB, HTTP, and DNS servers, an SSLStri… | 10 | 3641 | abandoned |
| silexphp/Silex Silex is a PHP micro-framework for building websites and simple web applications, built on top of Symfony components with a lightweight, Pi… | 10 | 3531 | abandoned |
| protectai/llm-guard LLM Guard is a Python library providing input and output scanners to secure LLM interactions, including sanitization, harmful language dete… | 10 | 3208 | abandoned |
| Apinto Goku API Gateway (goku_lite) is a high-performance HTTP API gateway written in pure Go, offering dynamic routing, service orchestration, mu… | 23 | 3126 | abandoned |
| ExpressGateway/express-gateway Express Gateway is a microservices API gateway built on Node.js and Express.js that secures, proxies, and manages APIs using Express middle… | 23 | 3030 | abandoned |
| MKSG-MugunthKumar/MKNetworkKit MKNetworkKit is an Objective-C networking framework for iOS 8+ built on NSURLSession, providing built-in authentication and HTTP 1.1 cachin… | 10 | 3024 | abandoned |
| javaee/jersey This is the archived original repository for Jersey, the reference implementation of JAX-RS for building RESTful web services in Java. The … | 10 | 2844 | abandoned |
| jiangqqlmj/FastDev4Android FastDev4Android is an Android rapid development framework built with Android Studio that bundles common utilities, base classes, and custom… | 23 | 2808 | abandoned |
| h2non/toxy Toxy is a hackable HTTP proxy for Node.js that simulates server failures and adverse network conditions for resiliency testing. It injects … | 10 | 2714 | abandoned |
| linkedin/rest.li Rest.li is a Java REST+JSON framework from LinkedIn for building robust, scalable service architectures with type-safe bindings, asynchrono… | 10 | 2535 | abandoned |
| AWS IoT Device SDK for Embedded C AWS's deprecated reference integrations of FreeRTOS libraries for microcontrollers, providing a full project structure with AWS IoT connect… | 10 | 2532 | abandoned |
| WiFi-Pumpkin WiFi-Pumpkin is a Python framework for auditing Wi-Fi security by creating rogue wireless access points and performing man-in-the-middle at… | 23 | 2498 | abandoned |
| AWTRIX AWTRIX 3 is open-source custom firmware for the Ulanzi Smart Pixel clock TC001, DIY matrix clocks, and old AWTRIX 2 boards, built on ESP32.… | 75 | 2358 | abandoned |
| Masonite Masonite is a modern, developer-centric Python web framework with batteries-included features like an Active Record ORM, authentication, qu… | 72 | 2358 | abandoned |
| ASP.NET Core SignalR ASP.NET Core SignalR is a library that makes it simple to add real-time web functionality to ASP.NET Core applications, letting server-side… | 10 | 2358 | abandoned |
| Glimpse Glimpse is an open-source diagnostics platform for ASP.NET web applications that inspects requests in real time, profiling server-side acti… | 10 | 2310 | abandoned |
| leancloud/ChatKit-OC ChatKit-OC is a free, open-source iOS chat UI component library built on LeanCloud's IM service, providing ready-made recent-contacts and c… | 10 | 2089 | abandoned |
| Terry-Mao/gopush-cluster gopush-cluster is a Go-based push server cluster supporting WebSocket and TCP connections with public/private message push, offline message… | 23 | 2069 | abandoned |
| Flotype/now NowJS is a Node.js library that simplifies building real-time web applications by transparently synchronizing function calls between server… | 32 | 1897 | abandoned |
| Zewo/Zewo Zewo is a lightweight Swift library for building web server applications using coroutines instead of asynchronous callback-based APIs. It p… | 23 | 1840 | abandoned |
| qiayuanl/legged_control legged_control is a C++ control framework for legged robots combining nonlinear model predictive control (NMPC), whole-body control (WBC), … | 32 | 1809 | abandoned |
| lyft/clutch Clutch is an extensible open-source web UI and API platform from Lyft for simplifying, accelerating, and de-risking common infrastructure m… | 10 | 1770 | abandoned |
| folkloreinc/laravel-graphql A Laravel 5/Lumen package that integrates Facebook's GraphQL, built on the webonyx/graphql-php implementation. It supports Eloquent models … | 10 | 1739 | abandoned |
| stevegraham/slanger Slanger is an open-source Ruby server implementing the Pusher realtime messaging protocol, allowing Pusher client libraries to connect to a… | 10 | 1687 | abandoned |
| Jovo Framework Jovo is an open-source TypeScript/JavaScript framework for building cross-platform voice and chat applications from a single codebase, targ… | 10 | 1669 | abandoned |
| labstack/armor Armor is a modern HTTP server and reverse proxy written in Go, supporting HTTP/2, automatic Let's Encrypt TLS certificates, WebSocket proxy… | 10 | 1659 | abandoned |
| Serverless Event Gateway Event Gateway is a Go-based L7 proxy and event router that combines API Gateway and Pub/Sub functionality, routing events to serverless fun… | 10 | 1648 | abandoned |
| spotify/apollo Apollo is a set of Java libraries from Spotify for writing composable microservices, providing an HTTP server, URI routing, a module system… | 10 | 1645 | abandoned |
| techpines/express.io express.io is a realtime micro-framework for Node.js that combines Express and Socket.io into a single drop-in replacement. It adds realtim… | 32 | 1569 | abandoned |
| zendframework/ZendSkeletonApplication A skeleton application providing a preconfigured starting point for Zend Framework MVC projects, installable via Composer. It includes modu… | 10 | 1486 | abandoned |
| geffzhang/NanoFabric NanoFabric is a .NET Core microservices development framework that integrates Consul, Ocelot, Polly, IdentityServer, Exceptionless, Orleans… | 10 | 1450 | abandoned |
| mikehostetler/amplify AmplifyJS is a jQuery-era JavaScript component library providing three modules: a pub/sub message bus for component communication, a unifie… | 32 | 1433 | abandoned |
| ZanPHP ZanPHP is a coroutine-based PHP network service framework for building high-concurrency (C10K+) SOA and RPC services, using yield-based cor… | 23 | 1427 | abandoned |
| spring-attic/greenhouse Greenhouse is a Java web application serving as the official reference application for Spring technologies such as Spring MVC, Security, So… | 10 | 1301 | abandoned |
| zackargyle/service-workers A collection of JavaScript tools for generating, testing, and experimenting with service workers, including a generator, a webpack plugin, … | 32 | 1278 | abandoned |
| strongloop/microgateway IBM API Connect Microgateway is an extensible Node.js-based API gateway framework for securing and controlling access to microservices and … | 32 | 1186 | abandoned |
| Zizaco/confide Confide is an authentication package for Laravel 4 that reduces repetitive work in user account management. It provides account creation, l… | 23 | 1180 | abandoned |
| BigPipe BigPipe is a Node.js web framework that decomposes pages into reusable chunks called Pagelets and pipelines them through execution stages i… | 23 | 1172 | abandoned |
| DylanPiercey/auto-sni A NodeJS library that automatically obtains and renews free SSL/TLS certificates from Let's Encrypt using SNI, with near-zero configuration… | 32 | 1169 | abandoned |
| Open WebRTC Toolkit Open WebRTC Toolkit Media Server (formerly MediaServer) is a scalable SFU+MCU server for WebRTC video conferencing and streaming, with real… | 10 | 1155 | abandoned |
| leocavalcante/siler Siler is a set of general-purpose high-level abstractions for PHP that provides declarative, function-based routing, HTTP handling, GraphQL… | 10 | 1108 | abandoned |
| Angel Angel is a batteries-included backend web framework for Dart, offering routing, controllers, ORM, GraphQL, WebSockets, authentication, and … | 10 | 1054 | abandoned |
| chenchengyin/likequanmintv An Android live-streaming app that mimics the Quanmin TV platform, built with an MVP architecture using Retrofit2/OkHttp3, RxJava, Dagger2,… | 32 | 1043 | abandoned |
← prev page 24 / 24